Watts LF530C User Manual

For Commercial and Residential Applications

ES-LF53_LF530C

Job Name

Job Location

Engineer

Approval

LEAD FREE

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Series LF53, LF530C

Pressure Relief Valves
(Calibrated and non-Calibrated)

Sizes: LF53: 1⁄2" or 3⁄4"
LF530C:

Watts Series LF53 and LF530C Pressure Relief Valves are
spring operated Lead Free* brass relief valves designed to be
used only as protection from the build up of excessive pres­sure in systems containing water, oil or air. These valves are not
ASME approved safety relief valves and should not be used in
system applications with this requirement. They feature a Lead
Free* brass construction with stainless steel springs. Ideally
suited as a bypass thermal expansion relief valve, the Series
LF530C valves incorporate a calibrated adjustment feature
for setting the valve to the relief pressure required. Its adjust­able pressure range is 50-175psi (3.4-12.1 bar). Series LF53 is
factory preset to standard pressure settings of 75, 100 or 125
(5.2, 6.9 or 8.6 bar). The LF53, LF530C features Lead Free*
construction to comply with Lead Free* installation require­ments.

Features

• Lead Free* brass

• Stainless steel springs

• Calibrated adjustment feature (Model LF530C)

• Protects against buildup of excessive pressure

• For use in systems containing water, oil, and air

Models

LF530C - Pressure relief valve with calibrated adjustment feature
LF53 - Pressure relief valve

1

⁄2" or 3⁄4"

Contractor

Approval

Contractor’s P.O. No.

Representative

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LF530C

Materials

Body: Lead Free* brass
Springs: Stainless steel
Disc: Buna-N

Pressure

LF530C Pressure Range: 50-175psi (3.4-12.1 bar)
LF53 Pressure Range: 75-125psi (5.2-8.6 bar)

Dimensions-Weights

Model Size HeigHt WidtH WeigHt

in in mm in mm lbs. gms.

LF53
LF530C

NOTICE

The Watts products shown on this page are small type relief
valves. Construction of these products does not meet the
(ANSI Z21.22) nationally recognized applicable standard.

1

⁄2 or 3⁄4 27⁄8 73 13⁄4 44 1⁄2 227

1

⁄2 or 3⁄4 3 76 15⁄8 41 5⁄8 284

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LF53

NOTICE

*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts
reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications
on Watts products previously or subsequently sold.

USA: Tel: [phone] • Fax: [phone] • www.watts.com
Canada: Tel: [phone] • Fax: [phone] • www.watts.ca

ES-LF53_LF530C 1325 © 2013 Watts

Inquire with governing authorities for local installation
requirements

A Watts Water Technologies Company